Wrench



A. A. PREVOST.

WRENCH.

APPLICATION FILED 1AN.23,1922.

l l Patented July M, l922 MMMWM.

ARTHUR A. PREVOST, OF DETROIT, MICHG-AN.

WRENCH.

Maasai.

Speciication of Letters Patent.

Patented July ill, i922.

Application filed January 23, 1922. Serial No. 531,091.

To all whom t may Concern Be it known that I, ARTHUR Pnnvosr, a citizen of the United States of America, residing at Detroit. in the county of rayne and State ot Michigan, have invented certain new and useful Improvements i n lllrenches, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to wrenches and consists in the novel construction as hereinafter described.

In the drawings:

Figure l is a central longitudinal section through a wrench;

Figure 2 is a cross-section thereof on line f2-2 of Figure l;

Figure 3 is a top plan view.

A is one orp the jaws of the wrench, which is formed with a bifurcated shank B and is provided with an opening C through the jaw in alignment with the space between the turcations ot' the shank. D is a jaw apertured to slidably engage the shank B. E is a revoluble hollow `handle which has an opening to receive the shank B with vthe inwardly extending annular [lange F for engaging notches G in the turca-tions ot the shank. The handle E is also provided with a threaded socket` portion H :tor engaging the threaded end of a shank I insertable through the aperture C between the turca tions of the shank B and attachable to the jaw l) by one or more cross-connectingA pins J.

The parts as above described are all sinrple in construction and can be manufactured by drop forging with very little machining. In assembling the wrench the jaw I) is first engaged with the shank B, after which the handle E is sleeved upon said shank and the liurcations of the shank are sprnng inward to engage the notches G with the liange Il. The threaded shank I is then inserted through the aperture C into engagement with the threaded socket II, after which the rectangular end or said shank I is attached to the jaw I by the pins QI. 1When thus assembled, the jaws ot'k the wrench may be opened or closed by merely rotating the handle and by reason of the tact that the shank I lills the space between the urcations of the shank B, the latter is prevented from accidental disengagement from the ange F.

What I claim as my invention is:

l. A wrench comprising a jaw member, a bifurcated shank extending therefrom and provided with notches adjacent to its end, a hollow handle member sleeved upon said biturcated shank and having an inwardly extending flange engageable with said notches when the turcations are sprung in` ward, said Vhandle being also provided with a threaded socket, a jaw member sleeved upon said shank member, a member insertable between the t'urcations ot said shank member, being threaded for engagement with said threaded socket, and a cross connect-ion between said last-mentioned member and thc jaw member which is sleeved upon the shank, whereby the rotation of said handle will adjust said jaw member.

2. Si. wrench comprising a jaw member, a biturcated shank member extending' there- 'from and having notches at its end, a hollow handle member adapted to be sleeved on said shank member and provided with an inwardly extending annular liange engagen able with said .notches when the furcations are sprung inward., a jaw member slidable upon said shank member, a member insertable between the :turcations of said shank to hold the same 'from springing inward, said member having a threaded portion for engaging a threaded socket in said handle, and a cross pin for connecting said last-mentioned member with the jaw member sleeved on said shank.

S. i wrench comprising a jaw member having a bi'liiircated shank member with an aperture through the jaw in alignment with the space between the liurcations, said furcations being notched at their outer ends, a hollow handle member sleeved upon said shank member having an inwardly extending flange for engaging said notches when the lure-ations are sprung inward and also provided with a threaded socket, a jaw member sleeved upon said shank member, and member insertable through the aperture of said first-mentioned jaw member between the turcations of said shank, said member having a threaded portion for engaging said threaded socket, and a cross pin for connecting said member with the j aw member slidable upon said shank.

In testimony whereof I ailix my signature.

ARTHUR A. PREVOST. 

